[INFO] cloning repository https://github.com/mframbou/ready-set-boole
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mframbou/ready-set-boole" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmframbou%2Fready-set-boole", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmframbou%2Fready-set-boole'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 601a6c9f2430b6a48dc0ebd08ac23ab3c8c7f44a
[INFO] checking mframbou/ready-set-boole against master#6fc0273b5a57eb78cc00841181113fda3e509478 for pr-112842-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmframbou%2Fready-set-boole" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mframbou/ready-set-boole on toolchain 6fc0273b5a57eb78cc00841181113fda3e509478
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mframbou/ready-set-boole
[INFO] finished tweaking git repo https://github.com/mframbou/ready-set-boole
[INFO] tweaked toml for git repo https://github.com/mframbou/ready-set-boole written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mframbou/ready-set-boole already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5092d9aabf7d75165371d27e175fd894958d8922220b122130289fbdd141db35
[INFO] running `Command { std: "docker" "start" "-a" "5092d9aabf7d75165371d27e175fd894958d8922220b122130289fbdd141db35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5092d9aabf7d75165371d27e175fd894958d8922220b122130289fbdd141db35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5092d9aabf7d75165371d27e175fd894958d8922220b122130289fbdd141db35", kill_on_drop: false }`
[INFO] [stdout] 5092d9aabf7d75165371d27e175fd894958d8922220b122130289fbdd141db35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6fc0273b5a57eb78cc00841181113fda3e509478" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93846e05163deda6412b723dbfdd13dcd4a3aa8ff5044b9e7bb34d84a5a7d55f
[INFO] running `Command { std: "docker" "start" "-a" "93846e05163deda6412b723dbfdd13dcd4a3aa8ff5044b9e7bb34d84a5a7d55f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ready_set_boole v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/negation_normal_form.rs:198:29
[INFO] [stdout]     |
[INFO] [stdout] 198 | fn collapse_not_node_to_nnf(mut root: &mut Node)
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_tree` is never used
[INFO] [stdout]    --> src/negation_normal_form.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn print_tree(root: &Node, level: u32)
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/negation_normal_form.rs:198:29
[INFO] [stdout]     |
[INFO] [stdout] 198 | fn collapse_not_node_to_nnf(mut root: &mut Node)
[INFO] [stdout]     |                             ----^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_tree` is never used
[INFO] [stdout]    --> src/negation_normal_form.rs:166:4
[INFO] [stdout]     |
[INFO] [stdout] 166 | fn print_tree(root: &Node, level: u32)
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.45s
[INFO] running `Command { std: "docker" "inspect" "93846e05163deda6412b723dbfdd13dcd4a3aa8ff5044b9e7bb34d84a5a7d55f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93846e05163deda6412b723dbfdd13dcd4a3aa8ff5044b9e7bb34d84a5a7d55f", kill_on_drop: false }`
[INFO] [stdout] 93846e05163deda6412b723dbfdd13dcd4a3aa8ff5044b9e7bb34d84a5a7d55f